
echo '----------------------'
echo "1"
grep -w -E 'Courant number mean' test.txt
echo "2"
grep -E -w 'Courant number mean' test.txt | grep -v 'Interface'
echo "3"



echo '----------------------'

grep "Courant number mean" test.txt | grep -v "Interface Courant number mean" | cut -d "=" -f2

